Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6285917 | Electric power system protection and control system and distributed control system | Katsuhiko Sekiguchi | 2001-09-04 |
| 5926089 | Electric power system protection and control system and distributed control system | Katsuhiko Sekiguchi | 1999-07-20 |
| 4464696 | Secondary arc extinction device | Yasuhiro Ogawa, Kunio Esumi | 1984-08-07 |